40533220 has 48 divisors (see below), whose sum is σ = 104767488. Its totient is φ = 12827520.

The previous prime is 40533217. The next prime is 40533263. The reversal of 40533220 is 2233504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9316 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (2182656).

Almost surely, 2^40533220 is an apocalyptic number.

It is an amenable number.

40533220 is an abundant number, since it is smaller than the sum of its proper divisors (64234268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40533220 is a wasteful number, since it uses less digits than its factorization.

40533220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22300 (or 22298 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 40533220 is about 6366.5705053820. The cubic root of 40533220 is about 343.5081419378.

Adding to 40533220 its reverse (2233504), we get a palindrome (42766724).

The spelling of 40533220 in words is "forty million, five hundred thirty-three thousand, two hundred twenty".